00570-00599: SQL*Connect Opening and Reading Files
00640-00699: SQL*Connect
02500-02699: CTOS
02700-02757: UNIX Two Task
02875-02899: IBM RS/6000
03500-03699: Macintosh
03700-03999: AOS/VS
04500-04899: CMS
04900-09429: ICL DRS6000
05000-05899: OEM
06000-06429: SQL*Net generic messages
06430-06499: NCR System 3000
06581-06591: European OEM Ports
06700-06899: SQL*Net TLI
06900-06939: CMX
06950-06999: SQL*Net AppleTalk
07000-07099: SQL*Connect/DB2
07100-07199: SQL*Connect/IMS
07200-07499: UNIX
07500-07999: VAX/VMS
08401-08410: European OEM Systems
08500-08799: SQL*Connect
08800-08899: SQL*Connect Tandem
09000-09099: SQL*Connect TERADATA
09200-09499: DOS, OS/2 and Novell
09500-09699: MPE/XL
09700-09999: UNIX
10000-10999: Internal
12100-12299: SQL*Net
12500-12699: SQL*Net
21100-21299: Internal